Muffler.



J. J. RADELL.

MUFFLER.

APPLICATION FILED JAN. 7, 1910.

Patented Apr. 26, 1910.

IIIIIIIII/ [III];

INVENTOR dOHN J. RADELL WITNESSES:

ATTORNEYS UNITED STATES PATENT OFFICE.

JOHN J. RADELL, OF UTICA, NEW YORK.

MUFFLER.

To all whom it may concern:

Be it known that I, JOHN J. RADELL, a citizen of the United States,residing at Utica, in the county of Oneida and State of New York, haveinvented certain new and useful Improvements in Mutliers, of which thefollowing is a specification, reference beinghad therein to theaccompanying drawing.

My invention relates to an. improved muffier, and I declare that thefollowing is a full, clear, concise and exact description thereof,suflicient to enable one skilled in the art to make and use the same,reference being had to the accompanying drawings in which like referencecharacters refer to like parts throughout.

The invention is shown in the form ofa muflier adaptable particularly toautomobiles, but I do not limit myself to that particular use of theinvention as it is capable of being used in a wide; variety ofapplications and with different kinds of engines. Nor do I limit myselfby the particular illustration here given, in matter, size, form orproportion, sim ly intending herein to illustrate one embo nnent of themvention whereby to disclose its principles.

The invention includes the arrangement of a series of chambers ofgreater or less number, as may be desired, and which number may beincreased or reduced according to conditions. These chambers provide aseries of what may be called cushion chambers for the exhaust vaporwhile at the same time passages are provided so that the vapor ma passthrough the series.

gther particulars of the invention will appear from the description anddrawings.

Figure l is a full side View of one form of the device. 'Fig. 2 is avertical sectional Vl6W.' Fig. 3 is a sectional view enlarged of aportion of the walls of abutting chamber members. Figs. 4, 5 and 6 areplan. views of the several chambers. Figs. 7 and 8 are partial detailsin cross section.

Referring to the drawings in detail, I provide at one end of the mufllera cap or base 1 which is bored and provided with a bushing 2 for theconnection of the intake of the exhaust. This base has its edge formedin a peripheral rim, as indicated 1n Fig. 2. Within this rim is set oneof the chamber members, shown at 2, and which in this instance consistsof a collar or ring of a given height and of a diameter to fit intoSpecification of Letters Patent.

Application filed January 7, 1910.

Patented Apr. 26, 1910. Serial No. 536,796.

the peripheral rim on part 1. This ring it will be seen forms a chamberinto which the exhaust first enters and which has a considerable spacerelative to the area of the exhaust pipe, so that the vapor of theexhaust disperses itself throughout the space formed by the ring and theadjacent members and acts as a bufler or cushion for the succeedingblast of the exhaust in so far as the vapor of the exhaust remains inthe chamber until the succeeding blast is delivered.

It is to be noted that part 2 sets into part 1 with itswall at the upperedge bearing against the rim on part 1 which reinforces the collar atthat point. The lower edge of the ring 2 is formed with an externalshoulder, as seen in Fig. 3, so that the next me1nber sets over thelower edge of part 2. In this way the pressure of the vapor at the loweredge of ring 2 is resisted both by ring 2 and the overlapping edge ofring or cup 3. This also enables me to form a tight joint and thisresult can be assisted by having the shoulder of ring 2 made on a bevel,as indicated at 7, the part 3 also being made on a bevel, as at 9, sothat when the parts are assembled and joined together a tight jointbetween the several parts is assured. This result can also be secured atthe point where ring 2 sets into rim 1, in which case either or bothparts may be formed with a bevel. I next in order place a collar" ofperhaps the same height as part 2 and shown at 3. This collar, however,has a bottom 8 in which are formed a plurality of openings, some of.

centrally disposed and others group thereabout. These openings are madeby cutting and pressing the bottom of chamber member 3 by dies whichpreferably out part of a circle and turn up the severed edge of theportion within the circle so that y as indicated in Fig. 2 there IS onone side a flange or lip 10 turned up on an angle, with a correspondingflange or lip 11 on the opposite side of the center, as seen in Fig. 4,while at various other points in the bottom are flanges or lips 14 of avarious number and position. These upturned flanges are in this chamberso placed that when the jet of exhaust enters the chamber formed by thering 2, the central volume of the blast strikes the bottom 8 in thecentral portion thereof and part of it passes through the openings atflanges 10 and 11 which deflect it toward the sides of the chamberformed by collar 3.

Between the central openings or ports and the outer ones is a surface ofunbroken boti the other, and that the openings are so made and soarranged that the exhaust does not tom against which an outer portion ofthe l but must follow a certain tortuous or wlndjet impacts and wherebyit is dispersed throughout the chamber formed by co lar 2. Furtheroutward portions of the jet are passed through the openings formed bythe lips or flanges l4 and are impacted against the walls of the chamberformed by the ring or cup 3. The ring or cup 3 is formed with its edgesbeveled, as already indicated as to the upper edge and its lower edge isalso beveled as indicated with reference to part 2. It will beunderstood while I speak of these edges being beveled to intcrfit, I donot specify such construction as essential to the invention, as othersuitable methods might be employed for forming a suitable joint, such asdishing the bottom of one cup inwardly, leaving a shoulder as B uponwhich the adjacent cup correspondingly shaped is seated as seen in Fig.3. The adjacent part 4 is formed similar to part 3 and comprises theside walls shown at 4 and the bottom 16. This bottom is formed only witha group of outer ports, shown at 18, and similar to those shown at 14 inFig. 4. It will be seen by this arrangement that the gas or vapor whichis passed into the chamber formed by part 3 and has been therethoroughly dispersed in the chamber forms something of a cushion for thesucceeding blast .as it enters, and being under pressure escapes throughthe openings 18, the central portion of the bottom 16 forming'a buttressor firm surface for the impact of the vapor and its deflection anddistribution throughout the chamber.

The vapor or gas having come into the chamber formed by ring 4 andhaving been dispersed therethrough by reason of the angular position ofthe flanges or lips 8 is met by the bottom of the succeeding ring whichconsists of the wall 5 and the bottom 20. In this bottom is centrallyplaced two oblique flanges or fins 21 and 22, Fig. 5, leavmg an unbrokensurface of the bottom 20 there around for the impact, deflection anddistribution of the gas which enters chamber formed by the ring 4:. Theflanges 21 and 22 deflect the gas into the chamber formed by the member,ring 5. It will be seen that in thls succession of rings or dishes, Iprovide as already stated a series of chambers for the vapor or gas,each having a space considerably larger than the area of the gas inletsthereto whereby a certain quantity of vapor remains in each chamber totake up the concussion of gas, but the vapor being under constant thoughuneven pressure finds its escape through a series of openings from onechamber to the other, but such openings are so made and placed in themetal that the currents of the exhaust are variously defiected from thepassage of one chamber to pass directly through the series oi openingsing course which necessarily leaves a residuum of the gas for a cushionetlect and breaks up the currents to prevent direct discharge of the gasthrough the muffler. In case a mulller of greater length is desired,these different chamber members may be duplicated, particularly 4 and 5,in alternate arrangement, so that if under certain conditions it isfound desirable the mutlier can be enlarged or even reduced in size. It.is believed that in Fig. 2 is shown the minimum number of chambermembers for a serviceable device, but if more be needed they can beadded in any given extent, it being important in arranging them to havethem so grouped that the passageway of the vapor will be sinuous aspossible and that the openings into the chambers will not be directlyopposite each other.

At 241-1 show the top or cover which 1s formed similar to part 1, with aperipheral rim which may be formed on a bevel to inclose the upperedgeof the adjacent part 5, which may be formed straight or on acorresponding bevel, one form being indicated in Fig. 7, and the otherin Fig. 8'. It has a central bore with bushing at 25 for the escape ofthe exhaust.

One important feature of the invention is the method in which theassembled members are secured. 27 and 28 are tubes having nuts or headsat one end and which are passed through the series of members and arethreaded at the other end for nuts 30. In this way the assembled memberscan be brought tightly together so as to close the joints, the tubesbeing passed through bores in the several members, which bores, however,may be slightly larger tlran the tubes, thus providing additionalpassages for the gas. An importantfeature, however, is that theseconnecting members are tubular so that air passes through them and coolsthem off and consequently cools the exhaust vapor in the severalchambers. The drawings show but two of these tubes, but it will beunderstood that any number of them may be employed and that they may belarger in size relative to the device than shown, and may...

be of the most suitable construction for the cooling effect.

\Vhile I have pointed out a form of construction whereby the edge of onemember everlaps the other, particular attention is called to thestrengthening effect of such construction, whereby the exhaust in anyone chamber is met at the joints by the re sistance of not only the wallforming that chamber but of the overlapping wall of the adjacent member,and that the Wall of the member which receives the pressure is the innerone of those overlapping edges, whereas were it the outer one thepressure on the wall would not have. the resistance of the 'whereat areplaced an wall of the adjacent member.

Having described my invention, what I claim as new and desire to secureby Letters Patent, is: v L

1. A device of the character described comprising a plurality ofcircular chamberswith transverse walls therebetween held together byhollow tubes adapted for air passages, the said walls being providedwith apertures gularly disposed flanges whereby to deflect the exhaust,substantially -as described.

2. A mufller comprising a plurality of ring-like members carrying dishlike partition members transverse the axis of the ex-- haust, the saidpartition members being apertured for the passage of the exhaust, saidapertures partially covered by upwardly, an-

gularly disposed flanges, and the said several members beingdismountably attached, substantially as described.

3. A device of the character described comprising end members withperipheral rims thereon,- a plurality of ring-like members havingtransverse sections apertured and said apertures provided with hoodedflanges adapted to be assembled between the end members, and means forholding the same 7 in assembled position, the said means comprisingtubular members passing through the said series, s'ubstantially asdescribed.

4. A mufller com rising end members, a plurality of interc angeableintermediate members, the same providing transverse partitionslengthwise of the device and tubular members adapted to form an airpassage Way whereby to hold a given number" of the same in assembledposition, substantially as de-, scribed.

5. A device of the character described comprising a. plurality ofinterfitting ringlike members, certain of the same being dPIOVldQd withtransverse portions aperture for the passage of gas, the said rmglikemembers aving their edges beveled to: interfit, the

wall of one member being reinforced by the wall of the adjacent memberat the point of greatest strain, substantially as described.

6. In a mufiler of the character described,

the combination of end members having pethe adjacent edges of separableindependent ring like members, having transverse sections with hoodedapertures, substantially as described.

8. In a muflier, the combination of a pluralit'y of independent,separable, ring like members, having transverse sections provided withhooded apertures, the edge of each ring like member adapted to reinforcethe adjacent edge of each preceding member, substantially as described.

9. In a 'm'uflier. of the character described, the combination of endmembers provided with peripheral rims adapted to reinforce the adjacentedges of adjacent ring'like members having their remote edges beveledand reinforced by the correspondingly beveled ed es of intermediatemembers, substanti'afy as-described.

10. In a miifller of the character described, the combination of-end'members and ring like members held together by a plurality of hollow'tubes, said ringv like members each having one ed e formed to seat andreinforce the-prece ing member and having the remote edge beveled andshouldered to fitupon the shoulder of the next succeeding member,substantially as described.

In testimony whereof I havehereunto affixed my signature in the presenceof two witnesses.

JOHN 'J. RADELL.

Witnesses:-

' ELEANOR T. DE GroRGI,

T. L. WILDER.

